Automatic telephony; a comprehensive treatise on automatic and semi-automatic systems (1921)
Smith, Arthur Bessey, b. 1875, Campbell, Wilson Lee · New York : McGraw-Hill · leaf 31
ording to like sections. The first level of all first selector banks must trunk to second selectorsin the first thousand, second level to second selectors in the second thou-sand, third level to the third thousand, etc. The trunks from A first selector banks are trunked to A second selec-tors in… … ConnectorFio. 16.—Ten-thousand-line exchange with lineswitches. T RUN KING 15 The combination of the above two schemes results in the arrangementof trunks shown. Consider the A first selectors. From the first levelof their banks run ten trunks to the A section of second selectors in thefirst…
Telephone
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